A flexible load coordinated distribution management system for new energy consumption

Abstract

The present invention relates to the field of power distribution management technology, and more specifically to a flexible load collaborative power distribution management system for new energy consumption. The system includes: a power generation device, which is used to generate electricity through new energy, supply power to power-consuming loads, and store the remaining power in a power storage device; a detection unit, which is used to detect and obtain the working state of the blocking switch based on the first power or the second power output by the power generation device or the power storage device, and is also used to detect the power consumption change of the power-consuming load and the power generation change of the power generation device in real time; a prediction unit, which is used to obtain the first power consumption prediction value of the power-consuming load in a first preset time period and the power generation prediction value of the power generation device, and is also used to obtain the second power consumption prediction value of the power-consuming load in a second preset time period. The present invention solves the problems of poor stability and imbalance in supply and demand of new energy distribution networks, improves the stability of new energy distribution networks, and achieves a balance between supply and demand of electricity.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution management, and more particularly to a flexible load collaborative distribution management system for new energy consumption. Background Art

[0002] In recent years, the utilization and promotion of new energy and renewable energy have received high attention. Compared with traditional thermal power, nuclear power, and hydropower, renewable energy can minimize damage to residents, opponents, environmental pollution, and location. Renewable energy includes wind energy, solar energy, solar thermal energy, fuel cells, geothermal energy, etc. Therefore, preferentially using new energy for power supply in the power grid can not only reduce environmental pollution but also save costs. However, the instability and power supply balance problems of new energy also pose great challenges to the power grid system. For example, Chinese Patent CN111987740B discloses a method for balancing electric power and electricity in new energy grid connection, which specifically includes the following steps: S1. New energy data acquisition: The rated power and wind speed data of the fan are collected in real time through the fan power acquisition module and the wind speed acquisition module in the new energy data acquisition unit, and the irradiance of the sun and the total area data of the photovoltaic array are collected by the irradiance acquisition module and the photovoltaic panel area acquisition module. This invention relates to the technical field of new energy power generation. This method for balancing electric power and electricity in new energy grid connection monitors the operating states such as current, temperature, and overload protection of the wind power generation unit and the photovoltaic power generation unit in real time through the generator set monitoring unit to ensure their normal operation. When a fault is detected, the alarm module issues a warning in a timely manner and transmits it to the power grid monitoring terminal, facilitating the distribution personnel to maintain it in a timely manner and reducing the impact on the power balance. Another example is US Patent US9991705B2, a method for balancing the power consumption generated by multiple electrical loads, which includes: estimating the absorbed energy of the load at a predetermined time interval, and if the estimated value of the absorbed energy of the load is not within the interval defined by the minimum and maximum consumption thresholds, calculating the energy to be changed according to the difference between the estimated value of the absorbed energy and the expected value of the energy, determining a strategy including at least the measures to be taken for the purpose of changing the energy supplied to a single load to reduce the difference between the estimated absorbed energy and its expected value, and starting the scheduling of power consumption according to the determined strategy. The above two solutions both solve the problem of power balance, but neither considers achieving the supply-demand balance of electricity by adjusting the charge-discharge power of the energy storage device, the power consumption of the power-consuming load, and the power generation of the power generation device, nor solves the problem of grid instability while achieving the supply-demand balance of electricity. Summary of the Invention

[0003] In order to better solve the above problems, the present invention provides a flexible load collaborative distribution management system for new energy consumption, and the system includes:

[0004] A power generation device is used to generate electricity through new energy and supply power to power-consuming loads, and also store the remaining power in a power storage device;

[0005] a detection unit, configured to detect a first power or a second power output by the power generation device or the power storage device, and further configured to detect in real time a power consumption change of the power consumption load and a power generation change of the power generation device, obtain a working state of a blocking switch connected to the power generation device or the power storage device based on the first power or the second power, and send the power consumption change, the power generation change and the state of the blocking switch to a management unit;

[0006] A prediction unit, used to obtain a first power consumption prediction value of the power consuming load in a first preset time period and a power generation prediction value of the power generating device, and also used to obtain a second power consumption prediction value of the power consuming load in a second preset time period;

[0007] The management unit is configured to: receive the power consumption change, the power generation change and the working state of the blocking switch, and when the working state of the blocking switch is closed, control the charging power of the power storage device and the power generation of the power generation device based on the power consumption change and the power generation change within a first preset time period, obtain the remaining power according to the first power consumption prediction value of the power consuming load and the power generation prediction value of the power generation device, and control the charging power of the power storage device, the power consumption of the power consuming load and the power generation of the power generation device based on the remaining power and the first capacity of the power storage device, and control the output power of the power storage device and the power consumption of the power consuming load based on the second power consumption prediction value of the power consuming load and the storage power of the power storage device within a second preset time period.

[0008] As a preferred technical solution of the present invention, the power-consuming load includes a plurality of power-consuming devices, wherein the power-consuming devices are flexible loads.

[0009] As a preferred technical solution of the present invention, the detection unit is used to measure and calculate the first power based on the first current, the first voltage, the phase of the first current, and the first voltage output by the power generation device when the power consumption load is supplied with power by the power generation device within the first preset time period, and is also used to measure and calculate the second power based on the second current, the second voltage, the phase of the second current, and the phase of the second voltage output by the power storage device when the power consumption load is supplied with power by the power storage device within the second preset time period;

[0010] The detection unit is further used to calculate the power generation of the power generation device at a preset period when the power generation device is used to supply power to the power consuming load, and obtain the power generation change of the power generation device based on the power generation difference between two adjacent periods. It is also used to periodically calculate the power consumption of the power consuming load through the real-time current and voltage of the power consuming load, and obtain the power consumption change of the power consuming load based on the power consumption difference between two adjacent periods.

[0011] As a preferred technical solution of the present invention, the management unit is configured to: when the power consumption of the power consuming load increases and the power consumption change is greater than or equal to a first threshold, or when the power generation of the power generating device increases and the power generation change is greater than or equal to a second threshold, reduce the first power output by the power generating device to the power consuming load, and adjust the charging power of the power storage device at the same time, wherein, when the storage capacity of the power storage device is less than the maximum storage capacity, the charging power of the power storage device is increased, and when the storage capacity of the power storage device is greater than or equal to the maximum storage capacity, the power generation of the power generating device is reduced.

[0012] As a preferred technical solution of the present invention, when the power consumption change is less than the first threshold value and the power generation change is less than the second threshold value, the remaining power in the first preset time period is calculated according to the first power consumption prediction value and the power generation prediction value, and when the remaining power is less than the first capacity of the power storage device, the power consumption of the power-consuming load is compared with the standard power consumption of the power-consuming load, and the power consumption of the power-consuming load is adjusted so that the power consumption of the power-consuming load is close to the standard power consumption; when the remaining power is greater than or equal to the first capacity of the power storage device, a first power difference between the remaining power and the first capacity is obtained, and when the sum of the first power difference and the first power consumption prediction value is less than the maximum power consumption of the power consumption load in the first preset time period, the real-time power consumption of the power consumption load is increased by a set ratio, and at the same time, the total power consumption in the first preset time period is satisfied to be the sum of the first power difference and the first power consumption prediction value; when the sum of the first power difference and the first power consumption prediction value is greater than or equal to the maximum power consumption of the power consumption load in the first preset time period, the power generation of the power generation device is reduced and the reduction amount is the first power difference.

[0013] As a preferred technical solution of the present invention, the management unit is also configured to: supply power to the power consuming load through the power storage device within the second preset time period, reduce the second power output by the power storage device when the power consumption change is greater than or equal to the first threshold, and adjust the power consumption of the power consuming load according to the storage capacity of the power storage device and the second power consumption prediction value of the power consuming load when the power consumption change is less than the first threshold, wherein, when the storage capacity of the power storage device is greater than or equal to the second power consumption prediction value, the power consuming load consumes power normally, and when the storage capacity of the power storage device is less than the second power consumption prediction value, obtain the difference between the storage capacity and the second power consumption prediction value as the second power, and reduce the power output of the power storage device during the time period with the largest power consumption within the second preset time period, wherein the reduced output power of the power storage device is the second power.

[0014] As a preferred technical solution of the present invention, the prediction unit is used to input the variables related to the power consumption of the power-consuming load within the first preset time period and the second preset time period into the power consumption prediction model to obtain the first power consumption prediction value and the second power consumption prediction value, and is also used to input the variables related to the power generation of the power generation device within the first preset time period into the power generation prediction model to obtain the power generation within the first preset time period.

[0015] As a preferred technical solution of the present invention, the detection unit is also used to determine the state of the blocking switch by detecting the size of the first power or the second power. When the first power or the second power is less than or equal to a set power threshold, the state of the blocking switch is disconnected. Conversely, when the first power or the second power is greater than the set power threshold, the state of the blocking switch is closed.

[0016] As a preferred technical solution of the present invention, the first capacity is less than the maximum storage capacity of the power storage device.

[0017] Compared with the prior art, the beneficial effects of the present invention are at least as follows:

[0018] The present invention obtains the first power or the second power of the above-mentioned power generation device or the power storage device through a detection unit, and obtains the working state of the above-mentioned blocking switch based on the magnitude of the above-mentioned first power or the second power. Since the starting power is relatively large when multiple power-consuming devices in the above-mentioned power-consuming load are started at the same time, the power supply of the power-consuming network will oscillate. In addition, due to the instability of solar power generation, the power generation of the power generation device will change. In order to ensure the stable operation of the entire power grid, a blocking switch is added between the power generation device and the power-consuming load. When the power consumption of the above-mentioned power-consuming load increases sharply or the power generation of the power generation device increases sharply and exceeds the threshold of the blocking switch, the blocking switch will be automatically disconnected, thereby protecting the equipment in the power grid from damage. Since the above-mentioned blocking switch is disconnected After being turned on, it must be restored manually, which brings inconvenience to the user. Therefore, by reducing the power consumption of the above-mentioned power-consuming load, that is, reducing the output power of the power supply device, and adjusting the charging power of the power storage device, the power consumption of the above-mentioned power-consuming load and the power generation of the above-mentioned power generation device according to the remaining power of the above-mentioned power generation device and the first capacity of the above-mentioned power storage device within a first preset time, so as to ensure the stability of the power grid and achieve the balance of power supply and demand; within the above-mentioned second preset time period, when the power consumption change of the above-mentioned power-consuming load is less than the first threshold value, the power consumption of the above-mentioned power-consuming load is adjusted according to the storage power of the above-mentioned power storage device and the second power consumption forecast value of the above-mentioned power-consuming load, so as to achieve the balance of power supply and demand while ensuring the stability of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a flexible load collaborative distribution management system for new energy consumption according to the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The present invention provides a flexible load coordinated power distribution management system for new energy consumption, such as Figure 1 As shown, the system comprises:

[0022] A power generation device is used to generate electricity through new energy and supply power to power-consuming loads, and also store the remaining power in a power storage device;

[0023] Specifically, the above-mentioned power generation device is a new energy power generation device, such as photovoltaic power generation. Power is generated by the above-mentioned power generation device, wherein the power generation of the above-mentioned power generation device can be adjusted by adjusting the direction of the photovoltaic panel. The greater the amount of sunlight received by the photovoltaic panel, the greater the power generation. Within the first preset time period, that is, the time period from sun rise to sun set, the above-mentioned power generation device is preferentially used to supply power to the power-consuming load. The above-mentioned power-consuming load is a flexible load, such as air conditioning, etc. When the power generation of the above-mentioned power generation device is greater than the power consumption of the above-mentioned power-consuming load, the remaining power is stored in the above-mentioned power storage device, thereby adjusting the balance of power supply and demand.

[0024] a detection unit, configured to detect in real time the first power or the second power output by the power generation device or the power storage device, and to detect in real time the power consumption change of the power consumption load and the power generation change of the power generation device, obtain the working state of the blocking switch connected to the power generation device or the power storage device based on the first power or the second power, and send the power consumption change, the power generation change and the state of the blocking switch to the management unit;

[0025] Specifically, in a first preset time period, the power generation of the power generating device is preferentially used to supply power to the power consuming load, and in a second preset time period, the power storage device is preferentially used to supply power to the power consuming load, and the second time period is from sunset on the previous day to sunrise on the next day. A relay is connected between the power generating device and the power storage device and the power consuming load, and the connection between the power generating device and the power storage device and the power consuming load can be controlled by the relay. In the process of supplying power to the power consuming load, the voltage, current, voltage phase and current phase output by the power generating device or the power storage device are detected by the detection unit to obtain the first power output by the power generating device or the second power output by the power storage device, wherein the calculation of the first power and the second power is a prior art and will not be repeated here; in the power consuming load When multiple power-consuming devices are started at the same time, the starting power is large, which will cause the power supply of the power-consuming network to oscillate. In addition, due to the instability of solar power generation, the power generation of the power generation device will change. In order to ensure the stable operation of the entire power grid, a blocking switch is added between the power generation device and the power-consuming load. When the power consumption of the above-mentioned power-consuming load increases sharply or the power generation of the power generation device increases sharply and exceeds the threshold of the blocking switch, the blocking switch will be automatically disconnected, thereby protecting the equipment in the power grid from damage. Since the above-mentioned blocking switch must be restored manually after being disconnected, it brings inconvenience to the user. Therefore, the above-mentioned detection unit detects the power consumption change and the power generation change, and prevents the above-mentioned blocking switch from being disconnected by adjusting the power generation of the above-mentioned power generation device, the charging power of the power storage device, and the first power output by the above-mentioned power generation device to the power-consuming load or the second power of the power storage device.

[0026] A prediction unit, used to obtain a first power consumption prediction value of the power consuming load in a first preset time period and a power generation prediction value of the power generating device, and also used to obtain a second power consumption prediction value of the power consuming load in a second preset time period;

[0027] Specifically, in order to ensure the balance of supply and demand in the power grid, the above-mentioned prediction unit obtains the first power consumption prediction value and the second power consumption prediction value within the above-mentioned first preset time period and the above-mentioned second time period and the power generation prediction value within the first preset time period based on the power consumption prediction model and the power generation prediction model, and adjusts the power consumption of the above-mentioned power load, the charging power of the power storage device and the power generation of the above-mentioned power generation device within the first preset time period based on the above-mentioned first power consumption prediction value and the power generation prediction value, and also adjusts the second power output of the above-mentioned power storage device and the power consumption of the above-mentioned power load based on the above-mentioned second power consumption prediction value within the above-mentioned second preset time period, the power output of the power storage device and the power consumption change of the above-mentioned power load, so as to achieve the balance of supply and demand of electricity.

[0028] The management unit is configured to: receive the power consumption change, the power generation change and the working state of the blocking switch, and when the working state of the blocking switch is closed, control the charging power of the power storage device and the power generation of the power generation device based on the power consumption change and the power generation change within a first preset time period, obtain the remaining power according to the first power consumption prediction value of the power consuming load and the power generation prediction value of the power generation device, and control the charging power of the power storage device, the power consumption of the power consuming load and the power generation of the power generation device based on the remaining power and the first capacity of the power storage device, and control the output power of the power storage device and the power consumption of the power consuming load based on the second power consumption prediction value of the power consuming load and the storage power of the power storage device within a second preset time period.

[0029] Specifically, when the blocking switch is closed, the power consumption load can be supplied with power through the power generation device or the power storage device. When the blocking switch is opened, the power supply path is disconnected and cannot supply power to the power consumption load. Therefore, the power supply and demand balance can only be adjusted when the blocking switch is closed. In the first set time period, during the time period with concentrated electricity consumption, multiple power-consuming devices in the power consumption load may be started at the same time, resulting in a large starting power, which leads to a sharp increase in the power consumption of the power consumption load and causes grid oscillation. In addition, due to the instability of photovoltaic power generation, the power generation may also increase sharply, and the power output to the power consumption load may also increase sharply, which may cause the blocking switch to be disconnected. Since the blocking switch needs to be manually closed after being disconnected, it will bring inconvenience to the user. In order to avoid the disconnection of the blocking switch, the first power output of the power generation device is reduced or the power storage device is increased. The charging power is adjusted according to the relationship between the remaining power of the power generation device and the first capacity of the power storage device, so as to ensure the stability of the power grid and achieve the balance of power supply and demand; within the second preset time period, when the power consumption change of the power consumption load is greater than or equal to the first threshold value, in order to prevent the disconnection of the blocking switch, the second power output by the power storage device is reduced to achieve power supply stability, and when the power consumption change of the power consumption load is less than the first threshold value, the power consumption of the power consumption load is adjusted according to the storage power of the power storage device and the second power consumption prediction value of the power consumption load, so as to ensure the stability of the power supply and achieve the balance of power supply and demand.

[0030] Furthermore, the power-consuming load includes a plurality of power-consuming devices, wherein the power-consuming devices are flexible loads.

[0031] Further, the detection unit is used to measure and calculate the first power based on the first current, the first voltage, the phase of the first current, and the phase of the first voltage output by the power generation device when the power consumption load is supplied by the power generation device within the first preset time period, and is also used to measure and calculate the second power based on the second current, the second voltage, the phase of the second current, and the phase of the second voltage output by the power storage device when the power consumption load is supplied by the power storage device within the second preset time period;

[0032] The detection unit is further used to calculate the power generation of the power generation device at a preset period when the power generation device is used to supply power to the power consuming load, and obtain the power generation change of the power generation device based on the power generation difference between two adjacent periods. It is also used to periodically calculate the power consumption of the power consuming load through the real-time current and voltage of the power consuming load, and obtain the power consumption change of the power consuming load based on the power consumption difference between two adjacent periods.

[0033] Specifically, the above technical scheme can provide a foundation for the detection unit to obtain the working state of the disconnecting switch based on the first power or the second power when the above power generation device and the above power storage device supply power to the above power-consuming load, and also provide a basis for preventing the disconnection of the disconnecting switch due to a sharp increase in the above power generation change and the above power consumption change by calculating the power generation change and the power consumption change of the above two adjacent cycles, thereby ensuring the stability of the power supply network and avoiding damage to the power-consuming load.

[0034] Further, the management unit is configured to: when the power consumption of the power-consuming load increases and the power consumption change is greater than or equal to a first threshold, or when the power generation of the power generation device increases and the power generation change is greater than or equal to a second threshold, reduce the first power output by the power generation device to the power-consuming load, and adjust the charging power of the power storage device at the same time, wherein when the storage capacity of the power storage device is less than the maximum storage capacity, increase the charging power of the power storage device, and when the storage capacity of the power storage device is greater than or equal to the maximum storage capacity, reduce the power generation of the power generation device; when the power consumption change is less than the first threshold and the power generation change is less than the second threshold, calculate the remaining power within the first preset time period according to the first power consumption prediction value and the power generation prediction value, and when the remaining power is less than the first capacity of the power storage device, charge the power of the power storage device to the power consumption load. The power consumption of the power load is compared with the standard power consumption of the power load, and the power consumption of the power load is adjusted so that the power consumption of the power load is close to the standard power consumption; when the remaining power is greater than or equal to the first capacity of the power storage device, a first power difference between the remaining power and the first capacity is obtained, and when the sum of the first power difference and the first power consumption forecast value is less than the maximum power consumption of the power load in the first preset time period, the real-time power consumption of the power load is increased by a set ratio, while satisfying that the total power consumption in the first preset time period is the sum of the first power difference and the first power consumption forecast value; when the sum of the first power difference and the first power consumption forecast value is greater than or equal to the maximum power consumption of the power load in the first preset time period, the power generation of the power generation device is reduced and the reduction amount is the first power difference.

[0035] Specifically, during the first preset time period, when the usage of the power-consuming load is large, since the startup of the power-consuming load requires a large startup power, when multiple power-consuming loads are started at the same time, the power consumption of the power-consuming load may change greatly, and the blocking threshold of the blocking switch may be reached, causing the blocking switch to be disconnected, thereby failing to continue to supply power to the power-consuming load, causing inconvenience to the user. In addition, due to the instability of photovoltaic power generation, the power generation may also increase sharply, causing the power supply power of the power-consuming equipment to increase sharply, thereby causing the blocking switch to be disconnected. Therefore, in order to avoid the above-mentioned problems, when the above-mentioned power-consuming equipment is detected, the power consumption of the power-consuming equipment may be changed. When the power consumption of the load increases and the power consumption change is greater than or equal to the first threshold, or when the power generation of the power generation device increases and the power generation change is greater than or equal to the second threshold, the first power output by the power generation device to the power consumption load is reduced to prevent the disconnection of the blocking switch. At the same time, when the storage capacity of the power storage device is less than the maximum storage capacity, the reduced power of the power consumption load is stored in the power storage device. When the storage capacity of the power storage device is greater than or equal to the maximum storage capacity, since the reduced power of the power consumption load has nowhere to be released, in order to stabilize the supply and demand balance and ensure stable power supply, the power generation of the power generation device can only be reduced;More specifically, when the power consumption change is less than the first threshold value and the power generation change is less than the second threshold value, that is, when the states of the power-consuming load and the power generation device are relatively stable, since it is possible that when multiple power-consuming loads are started, the power consumption of the power-consuming load may be less than the rated power through the above adjustment, so that the power consumption is less than the standard power consumption, wherein the above standard power consumption is the power consumption of the power-consuming device in the above rated power state. In order to meet the supply and demand balance and ensure stable power supply, the power storage device must have a certain margin to adjust the supply and demand balance. For example: the power consumption increases sharply and the change is greater than the first threshold value, and therefore the power consumption of the power-consuming load is adjusted according to the relationship between the remaining power in the above first preset time period and the first capacity of the above power storage device. When the remaining power is less than the first capacity, that is, when the above power-consuming device is working in the rated power state, the remaining power of the power generation device cannot fully charge the above power storage device. Therefore, the power consumption of the power-consuming load is increased so that the power consumption of the power-consuming load is close to the standard power consumption when the power consumption is operated at rated power. When the remaining power is greater than or equal to the first capacity of the power storage device, that is, when the power-consuming load is operated at rated power, the remaining power of the power generation device can still fully charge the power storage device. In order to allow the power storage device to have a certain margin to adjust the supply and demand balance, it is necessary to release part of the remaining power. By calculating the first power difference between the remaining power and the first capacity, that is, the surplus power, and calculating whether the sum of the surplus power and the power consumption forecast value exceeds the maximum power consumption of the power-consuming load, if it does not exceed, the surplus power is consumed by increasing the power consumption of the power-consuming load. If it exceeds, the power storage device satisfies the supply and demand balance by reducing the power generation of the power generation device, and also reduces the power consumption of the power generation device itself when generating power. ;

[0036] Further, the management unit is also configured to: supply power to the power consuming load through the power storage device within the second preset time period, reduce the second power output by the power storage device when the power consumption change is greater than or equal to a first threshold, and adjust the power consumption of the power consuming load according to the storage capacity of the power storage device and the second power consumption prediction value of the power consuming load when the power consumption change is less than the first threshold, wherein, when the storage capacity of the power storage device is greater than or equal to the second power consumption prediction value, the power consuming load consumes power normally, and when the storage capacity of the power storage device is less than the second power consumption prediction value, obtain the difference between the storage capacity and the second power consumption prediction value as the second power, and reduce the power output of the power storage device during the time period with the largest power consumption within the second preset time period, wherein the reduced output power of the power storage device is the second power.

[0037] Specifically, the second preset time period is the time period from sunset to sunrise in the evening. Since photovoltaic discharge is not possible during this time period, the power storage device is used to supply power to the power-consuming loads. When supplying power to the power-consuming loads, during a time period when power consumption is relatively concentrated in the power-consuming loads, when multiple power-consuming devices in the power-consuming loads are started at the same time, the starting power will be high, thereby causing the disconnection of the blocking switch, resulting in discontinuous power supply, and the blocking switch needs to be manually closed, which brings inconvenience to management personnel. Therefore, the power consumption of the power-consuming loads is reduced by reducing the second power output by the power storage device, thereby avoiding the disconnection of the blocking switch. In order to ensure the supply and demand balance of the power grid and reduce the power supply of the power system, the second preset time period is Assume that the power of the above-mentioned power storage device is sufficient to meet the consumption of the power load as much as possible during the time period, that is, when the storage capacity of the above-mentioned power storage device is greater than or equal to the above-mentioned second power consumption prediction value, that is to say, when the above-mentioned power load works at rated power, the storage capacity of the above-mentioned power storage device can also meet the consumption. Therefore, the above-mentioned power load works normally, that is, works at rated power. When the power output of the above-mentioned power storage device is less than the above-mentioned second power consumption prediction value, in order to meet the supply and demand balance of electricity, the power consumption of the above-mentioned power load is reduced. Since the number of power-consuming devices in the above-mentioned power load is the largest during the time period with the largest power consumption, the second power consumption can be offset by reducing a smaller power consumption of each of the above-mentioned power-consuming devices, and the impact on each power-consuming device is small. Therefore, it can not only ensure the supply and demand balance of electricity but also will not affect users.

[0038] Furthermore, the prediction unit is used to input variables related to the power consumption of the power-consuming load within the first preset time period and the second preset time period into the power consumption prediction model to obtain the first power consumption prediction value and the second power consumption prediction value, and is also used to input variables related to the power generation of the power generation device within the first preset time period into the power generation prediction model to obtain the power generation within the first preset time period.

[0039] Specifically, the creation and training of the above-mentioned power consumption prediction model and the above-mentioned power generation prediction model are existing technologies and will not be repeated here. The variables related to the power consumption load can be time, temperature and humidity, and the variables related to the power generation of the power generation device are weather and date, wherein the weather is related to the intensity of sunlight, and the date is related to the time from sunrise to sunset. Therefore, through the above-mentioned technical scheme, the first power consumption prediction value, the second power consumption prediction value and the power generation prediction value can be accurately obtained, thereby providing a basis for further adjusting the power generation of the power generation device, the power consumption of the power load, and the output power and charging power of the power storage device to achieve a balance between power supply and demand.

[0040] Furthermore, the detection unit is also used to determine the state of the blocking switch by detecting the size of the first power or the second power. When the first power or the second power is less than or equal to a set power threshold, the state of the blocking switch is disconnected. Conversely, when the first power or the second power is greater than the set power threshold, the state of the blocking switch is closed.

[0041] Specifically, when the blocking switch is closed, the power consumption load is supplied with power through the power generation device or the power storage device, and when the blocking switch is opened, the power generation device or the power storage device is disconnected from the power consumption load and cannot continue to supply power to the power consumption load. Therefore, the closing and opening of the blocking switch are determined by detecting the first power provided by the power generation device to the power consumption load or the second power provided by the power storage device to the power consumption load. When the first power or the second power is greater than the set power threshold, the blocking switch is considered to be closed, otherwise, the blocking switch is opened. Through the above technical solution, the state of the blocking switch can be accurately determined and then the supply and demand balance between the power generation device, the power storage device and the power consumption load can be adjusted when the blocking switch is closed.

[0042] Furthermore, when the state of the blocking switch is disconnected, a prompt message is sent to the user terminal, and the user terminal receives the prompt message and closes the blocking switch in time.

[0043] Furthermore, the first capacity is smaller than the maximum storage capacity of the power storage device.

[0044] In summary, the present invention obtains the first power or the second power of the above-mentioned power generation device or the power storage device through a detection unit, and obtains the working state of the above-mentioned blocking switch based on the size of the above-mentioned first power or the second power. Since when multiple power-consuming devices in the above-mentioned power-consuming load are started at the same time, the starting power is relatively large, which will cause the power supply of the power grid to oscillate. In addition, due to the instability of solar power generation, the power generation of the power generation device will change. In order to ensure the stable operation of the entire power grid, a blocking switch is added between the power generation device and the power consumption load. When the power consumption of the above-mentioned power consumption load increases sharply or the power generation of the power generation device increases sharply and exceeds the threshold of the blocking switch, the blocking switch will be automatically disconnected, thereby protecting the equipment in the power grid from damage. After being shut down, it must be restored manually, which brings inconvenience to the user. Therefore, by reducing the power consumption of the above-mentioned power-consuming load, that is, reducing the output power of the power supply device, the charging power of the power storage device, the power consumption of the above-mentioned power-consuming load and the power generation of the above-mentioned power generation device are adjusted according to the remaining power of the above-mentioned power generation device and the first capacity of the above-mentioned power storage device within the first preset time, so as to ensure the stability of the power grid and achieve the balance of power supply and demand; within the above-mentioned second preset time period, when the power consumption change of the above-mentioned power-consuming load is less than the first threshold value, the power consumption of the above-mentioned power-consuming load is adjusted according to the storage power of the above-mentioned power storage device and the second power consumption forecast value of the above-mentioned power-consuming load, so as to achieve the balance of power supply and demand while ensuring the stability of power supply.

[0045] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible load collaborative distribution management system for new energy consumption, characterized in that: The system comprises: A power generation device is used to generate electricity through new energy and supply power to power-consuming loads, and also store the remaining power in a power storage device; a detection unit, configured to detect a first power or a second power output by the power generation device or the power storage device, and further configured to detect in real time a power consumption change of the power consumption load and a power generation change of the power generation device, obtain a working state of a blocking switch connected to the power generation device or the power storage device based on the first power or the second power, and send the power consumption change, the power generation change and the state of the blocking switch to a management unit; A prediction unit, used to obtain a first power consumption prediction value of the power consuming load in a first preset time period and a power generation prediction value of the power generating device, and also used to obtain a second power consumption prediction value of the power consuming load in a second preset time period; The management unit is configured to: receive the power consumption variation, the power generation variation and the working state of the blocking switch, and when the working state of the blocking switch is closed, control the charging power of the power storage device and the power generation of the power generation device based on the power consumption variation and the power generation variation within a first preset time period, obtain the remaining power according to the first power consumption prediction value of the power consumption load and the power generation prediction value of the power generation device, and control the charging power of the power storage device, the power consumption of the power consumption load and the power generation of the power generation device based on the remaining power and the first capacity of the power storage device, and control the output power of the power storage device and the power consumption of the power consumption load based on the second power consumption prediction value of the power consumption load and the storage power of the power storage device within a second preset time period; The management unit is configured to: when the power consumption of the power consumption load increases and the power consumption change is greater than or equal to a first threshold, or when the power generation of the power generation device increases and the power generation change is greater than or equal to a second threshold, reduce the first power output by the power generation device to the power consumption load, and adjust the charging power of the power storage device at the same time, wherein when the storage capacity of the power storage device is less than the maximum storage capacity, increase the charging power of the power storage device, and when the storage capacity of the power storage device is greater than or equal to the maximum storage capacity, reduce the power generation of the power generation device; When the power consumption change is less than the first threshold value and the power generation change is less than the second threshold value, the remaining power in the first preset time period is calculated according to the first power consumption prediction value and the power generation prediction value, and when the remaining power is less than the first capacity of the power storage device, the power consumption of the power-consuming load is compared with the standard power consumption of the power-consuming load, and the power consumption of the power-consuming load is adjusted so that the power consumption of the power-consuming load is close to the standard power consumption; when the remaining power is greater than or equal to the first capacity of the power storage device, a first power difference between the remaining power and the first capacity is obtained, and when the sum of the first power difference and the first power consumption prediction value is less than the maximum power consumption of the power-consuming load in the first preset time period, the real-time power consumption of the power-consuming load is increased by a set ratio, and at the same time, the total power consumption in the first preset time period is satisfied to be the sum of the first power difference and the first power consumption prediction value; when the sum of the first power difference and the first power consumption prediction value is greater than or equal to the maximum power consumption of the power-consuming load in the first preset time period, the power generation of the power generation device is reduced and the reduction amount is the first power difference; In the second preset time period, the power consumption load is supplied with power through the power storage device, and when the power consumption change is greater than or equal to the first threshold, the second power output by the power storage device is reduced, and when the power consumption change is less than the first threshold, the power consumption of the power consumption load is adjusted according to the power storage capacity of the power storage device and the second power consumption prediction value of the power consumption load, wherein when the power storage capacity of the power storage device is greater than or equal to the second power consumption prediction value, the power consumption load consumes power normally, and when the power storage capacity of the power storage device is less than the second power consumption prediction value, the difference between the power storage capacity and the second power consumption prediction value is obtained as the second power, and the power output of the power storage device is reduced in the time period with the largest power consumption in the second preset time period, wherein the reduced output power of the power storage device is the second power; The prediction unit is used to input the variables related to the power consumption of the power-consuming load in the first preset time period and the second preset time period into the power consumption prediction model to obtain the first power consumption prediction value and the second power consumption prediction value, and is also used to input the variables related to the power generation of the power generation device in the first preset time period into the power generation prediction model to obtain the power generation in the first preset time period; The detection unit is also used to determine the state of the blocking switch by detecting the size of the first power or the second power. When the first power or the second power is less than or equal to a set power threshold, the state of the blocking switch is open. Conversely, when the first power or the second power is greater than the set power threshold, the state of the blocking switch is closed.

2. The system according to claim 1, characterized in that The power-consuming load includes a plurality of power-consuming devices, wherein the power-consuming devices are flexible loads.

3. The system according to claim 1, characterized in that The detection unit is used to measure and calculate the first power based on a first current, a first voltage, a phase of the first current, and a phase of the first voltage output by the power generation device when the power consumption load is supplied with power by the power generation device within the first preset time period, and is also used to measure and calculate the second power based on a second current, a second voltage, a phase of the second current, and a phase of the second voltage output by the power storage device when the power consumption load is supplied with power by the power storage device within the second preset time period; The detection unit is further used to calculate the power generation of the power generation device at a preset period when the power generation device is used to supply power to the power consuming load, and obtain the power generation change of the power generation device based on the power generation difference between two adjacent periods. It is also used to periodically calculate the power consumption of the power consuming load through the real-time current and voltage of the power consuming load, and obtain the power consumption change of the power consuming load based on the power consumption difference between two adjacent periods.

4. The system according to claim 1, characterized in that When the state of the blocking switch is disconnected, a prompt message is sent to the user terminal, and the user terminal receives the prompt message and closes the blocking switch in time.

5. The system according to claim 1, characterized in that The first capacity is smaller than the maximum storage capacity of the power storage device.

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